Textile spindle

ABSTRACT

A textile spindle adapted to support a bobbin for rotation while building a yarn package thereon having a replaceable driving bushing on the spindle blade for maintaining the bobbin in driving relation with the spindle.

United States Patent 1191 Blake Jan. 1, 1974 TEXTILE SPINDLE 2,320,9656/1943 Cotchett et al. 242 4621 2,331,611 10/1943 Kennedy et al.... [75]Inventor make, Campton, 3,534,917 10/1970 Blake 242 4621 [73] Assignee:Rockwell International Corporation, FOREIGN PATENTS OR APPLICATIONSPittsburgh, Pa.

716,045 9/1954 Great Britain 57/130 [22] Filed: Sept. 29, 1971 [2]] Appl184,705 Primary Examiner-Stanley N. Gilreath Attorney-John R. Bronaughet al.

[52] US. Cl. 242/4621, 57/130 [51] Int. Cl B65h 54/44, B65h 75/30 [57]ABSTRACT [58 Field of Search 242/4621, 46.2, A textile spindle adaptedto Support a bobbin for rota- 242/46.6; 57/129, 130 tion while buildinga yarn package thereon having a replaceable driving bushing on thespindle blade for [56] References Cited maintaining the bobbin indriving relation with the UNITED STATES PATENTS 2,922,274 1/1960Sacchini 242/4621 3 Claims, 3 Drawing Figures PATENTEU JAN 1 4 FIG. 3.

TEXTILE SPINDLE BACKGROUND OF THE INVENTION The invention pertains totextile spindles which are supported in an upright position on the railor frame of spinning or twisting machines. More particularly theinvention relates to an improved drive for maintaining a bobbin indriving relation with its respective spindle during rotation thereof andwhile building a yarn package on the bobbin.

A well known type of spindle to which the present invention isapplicable is made with a tapered tip which is adapted to communicatewith the drive section of a bobbin when the latter is mounted on it.

The bearing surface of the drive section of bobbins have been made withvarious degrees of taper, that is to say, the top fits range from a linefit up to and including a %-inch conforming fit. With wooden bobbins,which are by far the most common type in use, the known types of drivesare a recurring source of mill complaints and requests for an improvedand trouble free type of drive are frequent.

With the line fit type of drive, bobbins are known to rise on theirrespective spindles when driven at high speeds and of course when such acondition occurs the driving action is immediately lost.

The various forms of drive fits wear in as the wood bearing surface of abobbin is compressed and the bobbins under such conditions naturallyassume a lower position on their-spindles, thereby creating undesiredlower bobbin seats. The mixing of new and old bobbins together creates acondition of non-uniform bobbin seats on the same spinning frame. I

With bobbins having a very close line fit the drive section wears inmuch more rapidly than those of conforming fit thereby permitting saidbobbins to seat lower on their respective spindles. The greater thelength of the drive section of a bobbin the more difficult it is to doffdue to the area of contact of the conforming fit.

In an attempt to correct the undesired conditions of difficult doffingand uneven bobbin seats textile mills frequently change from one type offit to another. Additionally a further common and serious complaintfrequently registered by mills is that of excessive wear of the spindlesat the drive fit location.

Economically it is considered quite costly to purchase new or to re-workworn spindles to doff bobbins at less than the desired speed or to buildless of a filling package on those bobbins which are seating lower thandesigned due to wear of the drive section.

The textile spindle according to the present invention has corrected thedisadvantages described above by providing on the blade of a spindleprovisions for the assembly of a replaceable bushing which has aconfiguration that permits its engagement with the inner surface of abobbin and serves as a top drive therefor.

SUMMARY OF THE INVENTION The textile spindle of the present inventiondoes not include the conventional tapered tip portion which is adaptedto communicate with the internal drive section ofa bobbin. This portionof the spindle is removed and in the same general area there is provideda bushing locating portion intermediate the ends of and which is oflesser diameter than the so-called blade of the spindle. Integral withthe bushing location portion and forming the end of the blade there isprovided a bushing retaining member of a diameter greater than saidlocating portion. A bushing fabricated from a material such as nylon,Delrin or the like is retained on the locating portion by the retainingmember and has a configuration that permits a portion of its outersurface to engage the inner surface of a bobbin and serve as a top drivetherefor.

It is a general object of the invention to provide a textile spindlehaving a bobbin top drive means that will perform its intended functionequally well on new or used textile bobbins.

A further object is to provide a top drive for spindles which willmaintain uniform seating of bobbins mounted thereon throughout thelongitudinal extent of a spinning frame.

A further object is to provide a replaceable bushing for spindles whichserves as a top drive for bobbins, is a relatively inexpensivereplaceable item and which will substantially increase the lifeexpectancy of a textile spindle.

These and other objects of the present invention will become more fullyapparent by reference to the appended claims and as the followingdetailed description proceeds in reference to the figures of drawingwherein:

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a view in elevation andpartially in section of a spindle according to the invention showing afilling bobbin assembled thereon;

FIG. 2 is a view in exploded form showing a portion of a bobbin andspindle with the latters replaceable bushing for driving a bobbindisposed therebetween; and

FIG. 3 is a view of a portion of the assembly in FIG. 1 on an enlargedscale showing the replaceable bushing and the manner in which it engagesthe inner surface of a bobbin to serve as a top drive therefor.

DESCRIPTION OF THE PREFERRED EMBODIMENT In the embodiment shown in FIG.1 only those components of a spinning apparatus have been shown whichare required for a description of the invention, including principally atextile spindle generally indicated by numeral 10 having a fillingbobbin l1 assembled thereon.

This textile spindle includes such known elements as the spindle portion12, whorl 13, acorn l4 and spindle blade 15.

As shown in FIG. 2 the spindle blade 15 adjacent its upper end isprovided with a bushing locating portion 16 which is of a lesserdiameter than said blade and has a cross sectional configuration whichprogressively changes in diameter along its longitudinal axis thusdefining a taper.

A bushing 17 fabricated from nylon, Delrin or the like includes a meansextending axially therethrough that defines sidewalls 18 having aconfiguration conforming to the frustum of a cone. This provides matingsurfaces between said bushing and its locating portion 16 on the spindleblade 15.

Bushing 17 has outer surfaces which diverge away from the axis of saidbushing and join at a location between the ends 19 and 20 to form acontact site 21. This contact site 21 is located further from the axisof the bushing 17 than any other part of said bushing so as to providefor engagement with the inner surface of a bobbin 11 and serve as a topdrive therefor.

The spindle blade 15 includes an upper integrally formed terminalportion which serves as a retaining member 22 for maintaining thebushing 17 on the bushing locating portion 16 of the blade 15. The outersurface of the retaining member 22 is tapered as shown at 23 tofacilitate assembly of the bushing 17 onto the cating portion 16.

The resiliency of the material from which the bushing 17 is fabricatedpermits it to be assembled over the retaining member 22 and to befixedly positioned on the location portion 16 by means of the lowersurface of the retaining member 22 which has a diameter thatapproximates that of the upper end 19 of said bushing.

The preferred form of the invention shows and describes the bushing 17as being assembled adjacent the upper end of a spindle blade however, itshould be understood that such a bushing could be located at any desiredpoint along the length of the blade 15 so as to accommodate many of thevarious forms of spools and bobbins upon which yarn is adapted to bewound.

The bobbin 11 has a centrally disposed bore 24 (FIG. 3) which extendsfor a greater portion of the length of the bobbin and is adapted toreceive the blade 15 of the spindle 10. The upper portion 24 as shown inFIGS. 1 and 3, communicates with a top bore 25 of lesser diameter andimmediately adjacent to the point of communication of the two bores,bore 24 becomes progressively smaller and forms a so-called drive bore26 which is adapted to be engaged by the contact site 21 of the bushing17.

To prevent possible rotary movement of the bushing 17 on the bushinglocating portion 16, the internal portion of said bushing is providedwith a flat planar surface 28 and when assembled on said locatingportion 16 it is caused to mate with a similar surface 27 on the latterwhich extends upwardly to the upper end of the spindle.

In operation a bobbin 1 l is placed on the blade of the spindle as shownin FIG. 1 and the latter is caused to rotate by means well known tothose conversant in the spinning art. The contact site 21 of the bushing17 engages the inner surface of the bobbin 11 in the area of the drivebore 26. By means of a slight wedging action between the contact site ofthe bushing and the drive bore, the bobbin is maintained in drivingrelation with the spindle and in addition to permitting easy doffing ofthe bobbin, uniform seating for either new or old bobbins is provided.

Although the present invention has been described in connection withpreferred embodiments it is to be understood that modifications andvariations may be resorted to without departing from the spirit andscope of the invention as those skilled in the art will readilyunderstand. Such modifications and variations are considered to bewithin the purview and scope of the invention and the appended claims.

I claim:

1. A textile spindle having a spindle blade on which a bobbin is to bemounted for rotation with said spindle, said spindle blade including abushing locating portion intermediate the ends of said spindle bladehaving a diameter less than the remainder of the latter with a crosssectional configuration thereof progressively changing in diameter alongits longitudinal length defining a configuration conforming to thefrustum of a cone, a bushing mounted on said blade at said locatingportion, said bushing having outer surfaces which diverge away from theaxis of said bushing and join at a location between the ends thereof toprovide a contact site located further from the axis of said bushingthan any other part of said bushing to provide for substantially linearcontact with the inner surface of a bobbin and serve as a top drivetherefor.

2. The textle spindle according to claim 1 wherein said bushing includesan opening extending axial therethrough that defines sidewalls having aconfiguration conforming to the frustum of a cone for providing matchingsurfaces between said bushing and said bushing locating portion.

3. The textile spindle according to claim 2 wherein said bushinglocating portion is formed adjacent the end of the spindle blade andincludes an integral bushing retaining member forming the end of saidspindle blade.

1. A textile spindle having a spindle blade on which a bobbin is to bemounted for rotation with said spindle, said spindle blade including abushing locating portion intermediate the ends of said spindle bladehaving a diameter less than the remainder of the latter with a crosssectional configuration thereof progressively changing in diameter alongits longitudinal length defining a configuration conforming to thefrustum of a cone, a bushing mounted on said blade at said locatingportion, said bushing having outer surfaces which diverge away from theaxis of said bushing and join at a location between the ends thereof toprovide a contact site located further from the axis of said bushingthan any other part of said bushing to provide for substantially linearcontact with the inner surface of a bobbin and serve as a top drivetherefor.
 2. The textle spindle according to claim 1 wherein saidbushing includes an opening extending axial therethrough that definessidewalls having a configuration conforming to the frustum of a cone forproviding matching surfaces between said bushing and said bushinglocating portion.
 3. The textile spindle according to claim 2 whereinsaid bushing locating portion is formed adjacent the end of the spindleblade and includes an integral bushing retaining member forming the endof said spindle blade.